I know pulse-width-modulation controls the on/off cycle of LED's, and lower Hz can be seen as flickering, but why not just use the highest setting? Not all lights let you change the PWM, but some do, like the Chauvet Professional Ovation B-2805FC. Is there a reason not to just use the highest setting? If not, why don't they just lock them into that setting? Is a setting in the middle better to use for some instances? Does a higher rate (or lower rate) effect how long the electrical components will last (or the LED itself)? Is there a magic number, that once passed is just overkill and unnecessary with modern cameras and the human eye? I haven't worked with any lights that allow the changing of PWM yet, but hopefully soon, I will have some. I'm just looking for a better understanding of it. Thank you!